#!/usr/bin/python
# -*- coding: UTF-8 -*-

#~ The sum of the squares of the first ten natural numbers is,
#~ 12 + 22 + ... + 102 = 385
#~ 
#~ The square of the sum of the first ten natural numbers is,
#~ (1 + 2 + ... + 10)2 = 552 = 3025
#~ 
#~ Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025 − 385 = 2640.
#~ 
#~ Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.


k = 1
sum = 0
sum_of_the_square = 0
square_of_the_sum = 1


while ( k <= 100 ):
  sum += k
  sum_of_the_square += k * k
  k+=1

square_of_the_sum = sum * sum

print square_of_the_sum - sum_of_the_square
